The History of The Lie Detector
By Alex Horn
1878: First plethysmograph machine is built
1892: The first Polygraph machine is built
1895: The first "deception detection" machine is built
1914: A method for inhalation to exhalation
1915: Modern Polygraph machine is invented
1921: Resperation system added to poygraph machine
The mid 1940s: the interigation technique used
1948: First Polygraph school founded
1958: Quantitative System of Chart Analysis made
1992: CAPS invented
Reasoning to why this invention is important
Citations
"Feb. 2, 1935: You Lie." Wired.com. Conde Nast Digital, n.d. Web. 29 Sept. 2015.
Harper, Casey. "Former Cop Sentenced For Teaching How To Cheat Polygraph Tests." N.p., n.d. Web. 29 Sept. 2015.
"A History of Deceit." The Science of Murdoch Mysteries. N.p., 25 Sept. 2012. Web. 29 Sept. 2015.
"Ken Alder." Ken Alder. N.p., n.d. Web. 29 Sept. 2015.
"Man's Pre-employment Lie Detector Test Lands Prison Term." KSDK. N.p., n.d. Web. 29 Sept. 2015.
N.p., n.d. Web.
N.p., n.d. Web.
N.p., n.d. Web. 29 Sept. 2015.
THE POLYGRAPH HISTORY." Polygraph History. N.p., n.d. Web. 24 Sept. 2015.
"William Marston: Creator of DISC, the Polygraph Machine & Wonder Woman." Blogging around the World of DISC RSS. N.p., n.d. Web. 29 Sept. 2015.
"Zur Geschichte Des Grazer Instituts Für Psychologie." Institutsgeschichte. N.p., n.d. Web. 29 Sept. 2015.
"Zur Geschichte Des Grazer Instituts Für Psychologie." Institutsgeschichte. N.p., n.d. Web. 29 Sept. 2015.